Route · ORD → BIL · 2020–2025 BTS data
Chicago to Billings
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ORD to BIL (Chicago to Billings) ranks #4780 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 82%
- On-time
- +3 pts
- vs US avg
- 61 min
- Delay when late
- 632
- Flights
- #4780 of 4927
- Corpus placement
Cancelled
0.3%
Best Month
Oct 2025 88%
Worst Month
Jul 2025 67%
Distance
1,060 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2025 | 60 | 7 | 0 | 0 | OO,MQ |
| Sep 2025 | 90 | 13 | 0 | 2 | MQ,OO |
| Aug 2025 | 93 | 13 | 1 | 0 | OO,MQ |
| Jul 2025 | 93 | 31 | 1 | 0 | OO,MQ |
| Jun 2025 | 82 | 21 | 0 | 0 | OO,MQ |
| Sep 2024 | 30 | 1 | 0 | 0 | MQ |
| Aug 2024 | 31 | 1 | 0 | 0 | MQ |
| Jul 2024 | 31 | 5 | 0 | 0 | MQ |
| Jul 2023 | 31 | 10 | 0 | 0 | MQ |
| Jun 2023 | 30 | 2 | 0 | 0 | MQ |
| Jul 2022 | 31 | 6 | 0 | 0 | MQ |
| Jul 2021 | 30 | 4 | 0 | 0 | MQ |
Cancellation Rate
0.3%
2 of 632 flights
Diversion Rate
0.3%
2 of 632 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ORD - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
ORD on-time profileBIL - Billings
Full on-time, delay-cause, and seasonal performance for Billings, MT.
BIL on-time profileCompare the two airports
See ORD and BIL side by side on delays, cancellations, and reliability.
Compare ORD vs BILOrigin-hub reliability standing
Mid-pack among ORD departures
From ORD, this corridor sits with 147 other 75–85% on-time routes out of 168 tracked departures, not the hub's reliability leaders (10 at ≥85%) and not the softest ( 11 below 75%). Destination: Billings · fleet on-time rank #2361 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to ORD–BIL.
Routes with a similar on-time rate
What the Data Says About ORD to BIL
Bureau of Transportation Statistics records show Chicago to Billings (ORD to BIL) running a 82% on-time rate over 632 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 61.4 minutes. The 1,060-mile corridor is served by 3 carriers, and over the last 24 months 0.3% of 632 flights were cancelled, 0.3% diverted.
The monthly split is wide on this route: Oct 2025 posted the strongest performance at 88% on-time, while Jul 2025 came in at just 67% - a 22-point swing worth factoring into travel timing.
On the multi-year calendar, ORD–BIL peaks in August at 88.7% on-time ; the softest month is July at 74.1%, a 14.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does ORD to BIL rank among US routes by traffic? ▼
How often are flights delayed from ORD to BIL? ▼
What is the cancellation rate for ORD to BIL? ▼
How far is the flight from ORD to BIL? ▼
When is the best time to fly from ORD to BIL? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using ORD–BIL data
ORD–BIL runs 3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare ORD and BIL airport profiles: delay causes and top routes differ even on the same corridor. ORD airport
- If your dates flex, August (88.7% on-time) beats July (74.1%) on this corridor. Seasonal chart
- 4 other routes post a similar 82% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.